export default {
	namespaced: true,
	state: () => ({
		//购物车的数组，存储购物车中每个商品的信息
		//6个属性：id,name,price,count,small,logo,state
		cart: JSON.parse(uni.getStorageSync('cart') || '[]')
	}),
	
	mutations:{
		addToCart(state,goods) {
		const findResult =	state.cart.find(x => x.goods_id === goods.goods_id)
		
		if(!findResult){
			state.cart.push(goods)
		}else{
			findResult.goods_count++
		}
		
		this.commit('m_cart/saveToStorage')

		},
		saveToStorage(state){
			uni.setStorageSync('cart',JSON.stringify(state.cart))
		},
		radioClickChange(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if(findResult) {
				findResult.goods_state = goods.goods_state
				this.commit('m_cart/saveToStorage')
			}
		},
		updateGoodsCount(state,goods) {
			const findResult =  state.cart.find(x => x.goods_id === goods.goods_id)
			if(findResult) {
				findResult.goods_count = goods.goods_count
				this.commit('m_cart/saveToStorage')
			}
		},
		removeGoodsCarItem(state, goods_id) {
			state.cart = state.cart.filter(x => x.goods_id !== goods_id)
			this.commit('m_cart/saveToStorage')
		},
		updateAllGoodsState(state, newState) {
			state.cart.forEach(x => x.goods_state === newState)
			this.commit('m_cart/saveToStorage')
		}
	},
	
	
	getters:{
		total(state){
			let c = 0
			state.cart.forEach(x => c += x.goods_count)
			return c
		},
		checkedCount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total,item) => total += item.goods_count, 0 )
		},
		checkedGoodsPrice(state) {
			return state.cart.filter(x => x.goods_state).reduce((total, item) => total += item.goods_count * item.goods_price,0).toFixed(2)
		}
	}
}

